.frame {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 400px;
  height: 400px;
  background-color: #75c1e8;
  box-shadow: 1px 2px 10px rgba(0, 0, 0, 0.3);
  border-radius: 2px;
  overflow: hidden;
}

.sun {
  position: absolute;
  width: 64px;
  height: 64px;
  top: 40px;
  left: 52px;
  background-color: #ffd93c;
  border-radius: 50%;
  animation: moveRight 60s linear infinite alternate both;
}

.cloud-big, .cloud-small, .cloud-medium {
  position: absolute;
  z-index: 5;
  top: 118px;
  left: 280px;
  animation: moveLeft 60s linear infinite alternate both;
}

.cloud-medium {
  top: 89px;
  left: 50px;
}

.cloud-small {
  top: 74px;
  left: 195px;
}

@keyframes moveRight {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(100%);
  }
}
@keyframes moveLeft {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-300%);
  }
}